Causes of women’s hair loss problem are different from men. Yoshiaki Horie cited some reasons. Greater pressure due to physical and psychological factors, inappropriate weight loss program leading to poor nutrition, reduced hormone after menopause, postnatal changes of hormone level in body. Some diseases such as high or low thyroid hormone and anemia also cause hair loss.
Dihydrotestosterone (DHT), a male’s hormone, shortens the cycle of hair growth and causes early hair loss. Similar situation might happen if male’s hormone level in a female’s body increases or becomes abnormal. Change of hormone level takes place during pregnancy and postnatal period. The change affects hair growth and hair loss for a short period of time.
Female hormone takes care of hair growth. But Androgenetic alopecia (AGA) is a type of male’s hair loss which is caused by the influence of androgen (male hormone). A type of ‘bad’ male hormone, AGA is thought to be following the changes of DHT and feeding the cells with message to halt the growth of new hair.